Conduit fitting



sept. 8, 1931.

J. w. cox 1,821,931

CONDUIT FITTING vFiled March 27, 1925 ::5 In a conduit littinff Patented Sept. 8, 1931 UNITED STATES PATENT OFFICE JOHN WILLIAM COX, OI ERIE, PENNSYLVANIA, ASSIGNOR TO ERIE MALLEABLE IRON COMPANY, OF ERIE, PENNSYLVANIA, A CORPORATION OF' PENNSYLVANIA CONDUIT FITTING Application filed March 27, 1925.

This invention relates to conduit fittings, ordinarily in the form oi:` conduit boxes. Such boxes are often used Where it is desired to make a coupling with a conduit other than that which was initialljT designed for the box. The present invention provides a coupling designed for this purpose.

The invention is illustrated in the aecompanying drawings as follows Fig. l shows a side elevation, partly in section.

Fig. 2 a section on the line 2 2 in Fig. 1.

1 marks the box, 2 its cover, and 3 a conduit extension on the box7 ordinarily a threadless extension. A coupling 4 has an end 5 adapted to extend around the extension 3, this end being provided with slits so as to be contractible. A clamping ring 6 is arranged over the extension and adapt- ,0,0 couplingl is designed to connect an extension with a threadless conduit and is also adapted for attaching a coupling which may be secured to a conduit of a threadless extension.

That I claim as new is ig, the combination of a body having a threadless conduit extension; a coupling comprising a sleeve having threads extending from each end, the internal diameter of said sleeve at one end being ,lo smaller than the internal diameter of the sleeve at the opposite end; slits extending from each end, one end of the coupling eX- tending over the threadless conduit eXtension; and clamping rings screwed from each ed to be screwed outwardly on thecoupling end adapted to contract the ends of the cou- Serial No. 18,801.

In testimony whereof I have hereunto set my hand.

JOHN WILLIAM COX. 

